Street-lamp



No. 6|6,|93. Patented Dec. 20, I898.

T. LANGSTON.

STREET LAMP.

(Application filed June 17, 1898.)

(No Model.)

WITNESSES: INVENTORF- T/wmwZIazzgazon.

' ATTORNEY S rpizuo'ams PETERS co. pnnroumqu WASHKNGTON, lay a NITED STATES THOMAS IIANGSTON, OF MERIDEN,

CONNECTICUT, ASSIGNOR TO THE EDWARD MILLER (it COMPANY, OF CONNECTICUT.

s'TREET-LAMb.

SPECIFICATION forming part of Letters Patent No. 616,193, dated mama-a, 1858. Application filed June 17, 1898. Serial No. 683,723. .(No model.)

To aZZ whom it may concern.-

Be it known that I, THOMAS LANGsToN, a citizen of the United States, residing at Meriden,New Haven county, State of Connecticut, have invented certain new and useful Im= provements in Street-Lamps, of which the fol lowing is a full, clear, and exact description.

My invention relates to street-lamps, and particularly has reference to the class of tubular lanterns, and has for its object to provide a more efficient draft arrangement for the same to prevent the flame flickering or being extinguished.

In the accompanying drawings, Figure 1 shows in vertical sectional elevation a streetlamp provided with the preferred embodiment of my invention. Fig. 2 shows a horizontal sectional View through the lower part of the central draft-tube and the 'baifle-platcs therein. Fig. 3 shows a vertical sectional view through the upper part of the cap of the lantern, showing the arrangement of the baffleplates at this point.

In the drawings, A is a recess at the bottom of the lantern to fit over a ing a diaphragm a.

B is the cap of the lantern, provided with a globe, a fount C, and a wick-tube D. In the construction shown the lamp is provided with a central draft-tube E and has acollar at the bottom of the same which fits over a collar projecting upwardly from a draft-chamber E in connection with said central draft-tube.

T is the lantern-top as a whole.

K is a shield forming a part of said top and having a flange K and inclosing an air-supply chamber S and into which the upper end of the globe may project, and F is a draft-hood for the purpose of carrying oif the products of combustion, which may have a flange H. A cover G is preferably supported from the shield K, and between the cover G and the flange II the products of combustion may pass off. Air-tubes L L pass from within the shield K downward and connect with the draft-chamber E on opposite sides of the same in the manner common in this art. In the draft-chamber E is a baffle-plate e, vertically situated and in a longitudinal position with reference to the entrance-ports of said air-tubes. Within this chamber is also a vertical baffle-plate e, transverse to the plate 6 post and havand also to the direction of entrance of said tubes. These plates break up and direct the currents of air entering these tubes up through the central draft-tube to feed the flame. The openings M are also preferably provided in the draft-hood F, opposite the upper ends .of the tubes L, and air-directing plates 4?. n are also preferably projected from the ends of the air-tubes and pass therefrom through the air-supply chamber S toward or through the openings M. Air to supply the flame strikes against the globe and is by it and by the flange K directed up into the airsupply chamber 8. This air then strikes the baffle-plates and is directed into the tubes. The horizontal battle-plates are especially advantageous in directing the vertical currents, while the Vertical plates stop and direct the horizontal currents into the tubes.

It will be obvious that many variations of the construction herein disclosed may be made without departing from the spirit of my invention.

WhatI claim is 1. In a lantern in combination, a drafthood for conducting away the products of combustion,a shield outside of same and forming an air-supply chamber between the two, a draft-tube opening through said shield to supply air to the flame, said hood-having an opening therein substantially opposite said tube, and a baffle-plate extending substantially from the mouth of said tube into said air-supply chamber toward and close to said opening in said hood.

2. In a lantern in combination, a draft hood for conducting away the products of combustion, a shield outside of the same and forming an air-supply chamber between the two, a draft-tube opening through said shield to supply air to the flame, said hood having an opening therein substantially opposite said tube, and a baffle-plate extending substantially from the mouth of said tube into said air-supply chamber toward and close to said opening in said hood, and means to direct air from within said hood through said opening.

' 3. In alantern in combination, a drafthood, a shield outside of the same and forming an air-supply chamber between the two, a flange to direct air into said chamber and a draft-tube passing through said shield, said hood having an enlarged opening therein substantially opposite said tube.

4. In a lantern'an air-supply chamber, a draft-hood, an opening from said chamber into said hood, an air-tube connected with said supply-chamber near said opening, and

. a baffle-plate extending from said tube substantially to said opening, in combination With a lamp having a draft-chamber, and a substantially vertical bafile-plate within the same, said tube communicating with said draft-chamber.

5. In a lantern in combination, a top having a passage for the products of combustion,

THOMAS LANGSTON.

Witnesses:

I. B. MILLER, L. W. STADTMILLER. 

